package thinkingInJava.concurrency;
// page 673 捕获线程中的异常
//: concurrency/CaptureUncaughtException.java
import java.util.concurrent.*;

class ExceptionThread2 implements Runnable {
	public void run() {
		Thread t = Thread.currentThread();
		System.out.println("run() by " + t);
		System.out.println(
				"eh = " + t.getUncaughtExceptionHandler());
		throw new RuntimeException();
	}
}

class MyUncaughtExceptionHandler implements
Thread.UncaughtExceptionHandler {
	public void uncaughtException(Thread t, Throwable e) { // 捕获未捕获异常
		System.out.println("caught " + e);
	}
}

class HandlerThreadFactory implements ThreadFactory {
	public Thread newThread(Runnable r) {
		System.out.println(this + " creating new Thread");
		Thread t = new Thread(r);
		System.out.println("created " + t);
		t.setUncaughtExceptionHandler(
				new MyUncaughtExceptionHandler());
		System.out.println(
				"eh = " + t.getUncaughtExceptionHandler());
		return t;
	}
}

public class CaptureUncaughtException {
	public static void main(String[] args) {
		ExecutorService exec = Executors.newCachedThreadPool(
				new HandlerThreadFactory());
		exec.execute(new ExceptionThread2());
	}
} /* Output: (90% match)
HandlerThreadFactory@de6ced creating new Thread
created Thread[Thread-0,5,main]
eh = MyUncaughtExceptionHandler@1fb8ee3
run() by Thread[Thread-0,5,main]
eh = MyUncaughtExceptionHandler@1fb8ee3
caught java.lang.RuntimeException
 *///:~
